Definition: The .conf file in VirtualBox configures a system, defining everything that goes into running the virtual machine. In this example: - _ represents something special that must be used only by this section of code ..and so on for other sections, including: - qemu: This is the actual kernel driver that runs on the virtual machine - conf: It's where configuration parameters are stored (like kernel settings) - /lib/qemu.conf: The system path to the .conf file The _ represents that this section of code must be run by the Linux kernel, and it also serves as a reference point for other sections within the .conf file. So, in summary: _ is a special symbol used within the VirtualBox configuration to specify which files are meant to be run from within this system. ..and conf is where those specific parameters are stored. _ represents what must be done with these settings and how they should be configured (kernel settings).